public TextCaret(IWpfTextView textView, IAdornmentLayer caretLayer, ISmartIndentationService smartIndentationService, IClassificationFormatMap classificationFormatMap)
{
if (caretLayer == null)
{
throw new ArgumentNullException(nameof(caretLayer));
}
if (classificationFormatMap == null)
{
throw new ArgumentNullException(nameof(classificationFormatMap));
}
this.textView = textView ?? throw new ArgumentNullException(nameof(textView));
imeState = new ImeState();
this.smartIndentationService = smartIndentationService ?? throw new ArgumentNullException(nameof(smartIndentationService));
preferredXCoordinate = 0;
__preferredYCoordinate = 0;
Affinity = PositionAffinity.Successor;
currentPosition = new VirtualSnapshotPoint(textView.TextSnapshot, 0);
textView.TextBuffer.ChangedHighPriority += TextBuffer_ChangedHighPriority;
textView.TextBuffer.ContentTypeChanged += TextBuffer_ContentTypeChanged;
textView.Options.OptionChanged += Options_OptionChanged;
textView.VisualElement.AddHandler(UIElement.GotKeyboardFocusEvent, new KeyboardFocusChangedEventHandler(VisualElement_GotKeyboardFocus), true);
textView.VisualElement.AddHandler(UIElement.LostKeyboardFocusEvent, new KeyboardFocusChangedEventHandler(VisualElement_LostKeyboardFocus), true);
textView.LayoutChanged += TextView_LayoutChanged;
textCaretLayer = new TextCaretLayer(this, caretLayer, classificationFormatMap);
InputMethod.SetIsInputMethodSuspended(textView.VisualElement, true);
}
void InitializeIME()
{
if (imeState.HwndSource != null)
{
return;
}
imeState.HwndSource = PresentationSource.FromVisual(textView.VisualElement) as HwndSource;
if (imeState.HwndSource == null)
{
return;
}
Debug.Assert(imeState.Context == IntPtr.Zero);
Debug.Assert(imeState.HWND == IntPtr.Zero);
Debug.Assert(imeState.OldContext == IntPtr.Zero);
if (textView.Options.DoesViewProhibitUserInput())
{
imeState.Context = IntPtr.Zero;
imeState.HWND = IntPtr.Zero;
}
else
{
imeState.HWND = ImeState.ImmGetDefaultIMEWnd(IntPtr.Zero);
imeState.Context = ImeState.ImmGetContext(imeState.HWND);
}
imeState.OldContext = ImeState.ImmAssociateContext(imeState.HwndSource.Handle, imeState.Context);
imeState.HwndSource.AddHook(WndProc);
TfThreadMgrHelper.SetFocus();
}
public HexCaretImpl(WpfHexView hexView, HexAdornmentLayer caretLayer, VSTC.IClassificationFormatMap classificationFormatMap, VSTC.IClassificationTypeRegistryService classificationTypeRegistryService)
{
if (hexView == null)
{
throw new ArgumentNullException(nameof(hexView));
}
if (caretLayer == null)
{
throw new ArgumentNullException(nameof(caretLayer));
}
if (classificationFormatMap == null)
{
throw new ArgumentNullException(nameof(classificationFormatMap));
}
if (classificationTypeRegistryService == null)
{
throw new ArgumentNullException(nameof(classificationTypeRegistryService));
}
this.hexView = hexView;
imeState = new ImeState();
preferredXCoordinate = 0;
__preferredYCoordinate = 0;
hexView.Options.OptionChanged += Options_OptionChanged;
hexView.VisualElement.AddHandler(UIElement.GotKeyboardFocusEvent, new KeyboardFocusChangedEventHandler(VisualElement_GotKeyboardFocus), true);
hexView.VisualElement.AddHandler(UIElement.LostKeyboardFocusEvent, new KeyboardFocusChangedEventHandler(VisualElement_LostKeyboardFocus), true);
hexView.LayoutChanged += HexView_LayoutChanged;
hexView.BufferLinesChanged += HexView_BufferLinesChanged;
hexView.ZoomLevelChanged += HexView_ZoomLevelChanged;
hexCaretLayer = new HexCaretLayer(this, caretLayer, classificationFormatMap, classificationTypeRegistryService);
InputMethod.SetIsInputMethodSuspended(hexView.VisualElement, true);
}
public TextCaret(IWpfTextView textView, IAdornmentLayer caretLayer, ISmartIndentationService smartIndentationService, IClassificationFormatMap classificationFormatMap) {
if (textView == null)
throw new ArgumentNullException(nameof(textView));
if (caretLayer == null)
throw new ArgumentNullException(nameof(caretLayer));
if (smartIndentationService == null)
throw new ArgumentNullException(nameof(smartIndentationService));
if (classificationFormatMap == null)
throw new ArgumentNullException(nameof(classificationFormatMap));
this.textView = textView;
imeState = new ImeState();
this.smartIndentationService = smartIndentationService;
preferredXCoordinate = 0;
__preferredYCoordinate = 0;
Affinity = PositionAffinity.Successor;
currentPosition = new VirtualSnapshotPoint(textView.TextSnapshot, 0);
textView.TextBuffer.ChangedHighPriority += TextBuffer_ChangedHighPriority;
textView.TextBuffer.ContentTypeChanged += TextBuffer_ContentTypeChanged;
textView.Options.OptionChanged += Options_OptionChanged;
textView.VisualElement.AddHandler(UIElement.GotKeyboardFocusEvent, new KeyboardFocusChangedEventHandler(VisualElement_GotKeyboardFocus), true);
textView.VisualElement.AddHandler(UIElement.LostKeyboardFocusEvent, new KeyboardFocusChangedEventHandler(VisualElement_LostKeyboardFocus), true);
textView.LayoutChanged += TextView_LayoutChanged;
textCaretLayer = new TextCaretLayer(this, caretLayer, classificationFormatMap);
InputMethod.SetIsInputMethodSuspended(textView.VisualElement, true);
}
void MoveImeCompositionWindow()
{
if (!IsValuesCaretPresent && !IsAsciiCaretPresent)
{
return;
}
if (imeState.Context == IntPtr.Zero)
{
return;
}
var line = ContainingHexViewLine;
if (line.VisibilityState == VSTF.VisibilityState.Unattached)
{
return;
}
var linePos = GetLinePosition(line.BufferLine, currentPosition);
if (linePos == null)
{
return;
}
var charBounds = line.GetExtendedCharacterBounds(linePos.Value);
const int CFS_DEFAULT = 0x0000;
const int CFS_FORCE_POSITION = 0x0020;
var compForm = new ImeState.COMPOSITIONFORM();
compForm.dwStyle = CFS_DEFAULT;
var rootVisual = imeState.HwndSource.RootVisual;
GeneralTransform generalTransform = null;
if (rootVisual != null && rootVisual.IsAncestorOf(hexView.VisualElement))
{
generalTransform = hexView.VisualElement.TransformToAncestor(rootVisual);
}
var compTarget = imeState.HwndSource.CompositionTarget;
if (generalTransform != null && compTarget != null)
{
var transform = compTarget.TransformToDevice;
compForm.dwStyle = CFS_FORCE_POSITION;
var caretPoint = transform.Transform(generalTransform.Transform(new Point(charBounds.Left - hexView.ViewportLeft, charBounds.TextTop - hexView.ViewportTop)));
var viewPointTop = transform.Transform(generalTransform.Transform(new Point(0, 0)));
var viewPointBottom = transform.Transform(generalTransform.Transform(new Point(hexView.ViewportWidth, hexView.ViewportHeight)));
compForm.ptCurrentPos = new ImeState.POINT(Math.Max(0, (int)caretPoint.X), Math.Max(0, (int)caretPoint.Y));
compForm.rcArea = new ImeState.RECT(
Math.Max(0, (int)viewPointTop.X), Math.Max(0, (int)viewPointTop.Y),
Math.Max(0, (int)viewPointBottom.X), Math.Max(0, (int)viewPointBottom.Y));
}
ImeState.ImmSetCompositionWindow(imeState.Context, ref compForm);
}
void CancelCompositionString()
{
if (imeState.Context == IntPtr.Zero)
{
return;
}
const int NI_COMPOSITIONSTR = 0x0015;
const int CPS_CANCEL = 0x0004;
ImeState.ImmNotifyIME(imeState.Context, NI_COMPOSITIONSTR, CPS_CANCEL, 0);
}
void StopIME(bool cancelCompositionString)
{
if (imeState.HwndSource == null)
{
return;
}
if (cancelCompositionString)
{
CancelCompositionString();
}
ImeState.ImmAssociateContext(imeState.HwndSource.Handle, imeState.OldContext);
ImeState.ImmReleaseContext(imeState.HWND, imeState.Context);
imeState.HwndSource.RemoveHook(WndProc);
imeState.Clear();
textCaretLayer.SetImeStarted(false);
}
protected override void WndProc(ref Message m)
{
if (m.Msg == WM_KEYDOWN)
{
if (m.LParam.ToInt32() == 917505)
{
_BackSpaceKeyPressed = true;
}
else
{
_BackSpaceKeyPressed = false;
}
}
if (m.Msg == WM_IME_COMPOSITION || m.Msg == WM_IME_STARTCOMPOSITION || m.Msg == WM_IME_ENDCOMPOSITION)
{
_ImeState = ImeState.None;
}
if (m.Msg == WM_IME_ENDCOMPOSITION)
{
OnTextChanged(EventArgs.Empty);
}
if (m.Msg == WM_IME_COMPOSITION)
{
int comp = m.LParam.ToInt32();
if ((comp & GCS_RESULTSTR) > 0)
{
_ImeState = ImeState.Complete;
}
else if ((comp & GCS_COMPSTR) > 0)
{
_ImeState = ImeState.Compounding;
OnTextChanged(EventArgs.Empty);
}
}
base.WndProc(ref m);
}
